Improvement in lamp-burners



P. PRETTYMAN.

Lamp Burner. 7 No. 93,7414. 7 Patented Aug-17,1869.

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PERRY PRETTYMAN, OF PARADISE SPRING FARM, OREGON;

Letters Patent No. 93,744, dated Augustl'r', 1869.

MPROVEMENT IN LAMP-BURNERS.

The Schedule referred to in these Letters Patent and making part of the same.

same, reference being had tb theaccompanying drawings, forming part of this specification. V

This invention relates .to improvements in lamps, whereby itis designed to provide means. for prevent-.- ing the wick-tube from heating, andthe communica-' tion of heat to the oil-chamber, and for facilitating the process of combustion.

In the accompanying drawings Figure l representsa sectional elevation of a lamp provided'with my improvements, the line at x of fig. 2

showing the plane of the section; and

Figure 2 represents a horizontal section on the plane y y of fig. 1.

Similar letters of reference indicate corresponding I parts.

In order to secure the glass-chimneys to the lamptops, or burners, I provide the metallic support A for the chimney, with the vertical curved springs a b, the

one set, a, on the outside of the vertical portion of the support A, and the other set, I), on the inside of the same, arranged at suitable intervals around the same, between which the shell of the lower end of the chimney is inserted, whereby the application and removal of the said chimneys are greatly facilitated, and it may be held with security, which latter depends 011 the strength of the springs, and they may be made of any desired strength; and in order to protect the wicktube from becoming unduly heated, I encase it in a conical tube, B, slightly flattened at the top, and having anopening through which the wick-tube passes,

.the said conical tube having a much greater radiatingsurface, and being arranged to take the heat thrown downward from the flame from the wick-tube,.will spread it and expose it to the air admitted through the perforated funnel G, will itself become cooled, in a great measure, by giving the heat off to the air, and thereby prevent the heating of the wick-tube and the communication of the heat to the oil-chamber below. And for facilitating the process of combustion, I provide a device for giving direction to the air as it comes into contact with the flame, and thereby so shaping the said flame as to' receive the greatest amount of oxygen from the air and to produce a brilliant flame.

The said device consists of a sheet-metal plate, I),

having an elliptical opening through it centrally, and

arranged horizontally above the wick-tube... witli'the said opening coincident with the axis of the wicktube, and its longest diameter in the same direction as the longest diameter of the said wick-tube, and partly within the perforated funnel 0- The said plate D is provided with two wings, E, or

air-deflectors, rising npwardin an angular direction toward the sides of the flame, causing the air coming in contact with the base of the flame to contract it as much as possible in the direction of its shortest diameter, while the wings, or air-deflectors-I l, projecting upward from the ends in the opposite direction, or outwardly from the flame, and.beyond the shell of the funnel G, are calculated, by preventing the air rising outside of thesaid funnel, from contracting the flame in its'longest diameter, whereby the surface of the flame as it emerges from the said funnel will be'very much greater, causing a more perfect expansion of the flame, whereby the illumination of the carbon particles is rendercdmore perfect.

I claim as new, and desire to secure by Letters Patent- The arrangement, with relation to the wick-tube, of the conical imperforatc tube B, perforatcd'funnel G, and air-deflector D, provided with the wings E F, as herein set forth and shown, for the purpose specified.

The above specification of my invention signed by me, this 13th day of October, 1868.

PERRY BRETTYMAN.

Witnesses I. L. ATKINSON, .L. M. PARRISH. 

